Yes - the reason is that this router is a VM with two passthrough NICs. The hypervisor is connected to both Force10 routers/switches with LACP, so the VM needs to run linux bonding mode 2 to provide a bond0 interface to the VM. Neighbourship then needs to be established to both routers on this bonded interface.
I tried to create neighbourship directly on the interfaces, but this does not work, I assume because the switches loadbalance traffic on the LACP portchannel. I could create a neighbourship with a VRRP interface, but as I understand it this will not work due to different router-ids in case of failover. So basically as I see it, this is the only way to make this work - unless you have another idea? Thanks Regards Kristoffer On 13/12/2013, at 17.37.29, Raphael Mazelier <r...@futomaki.net> wrote: >> I?m trying to use a bonded interface on linux to connect to two routers, one >> router on each physical link, each with a /31 subnet. >> Only one of the routers (Force10 S4810) forms adjacency with the linux host >> (whichever comes first), the other gets stuck in EXSTART >> until I shut/no shut the link, then Bird creates adjacency with both routers. > > What are you trying to do with this design ? It's rather strange. > > -- > Raphael Mazelier >
